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A/C Relay Location?

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Old 06-30-2011, 06:03 PM   #1
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A/C Relay Location?

The A/C compressor on my 1987 Firebird stopped locking up so I checked the plug and there is no power going to the compressor, so it must be the A/C control relay. I have found pics of the relay itself but cannot see where it is located. If anyone can tell me where it is located that would be great. Thanks
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Old 07-06-2011, 11:25 AM   #2
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Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56


Relaying Information

The relay is located at the left side of the dash.


Happy Racing!



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Old 07-06-2011, 06:32 PM   #3
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Re: A/C Relay Location?

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Originally Posted by sc.tinman View Post
The A/C compressor on my 1987 Firebird stopped locking up so I checked the plug and there is no power going to the compressor, so it must be the A/C control relay. I have found pics of the relay itself but cannot see where it is located. If anyone can tell me where it is located that would be great. Thanks

please clarify

if you engage the A/C the compressor does not engage, is that correct? Do the cooling fans turn on? If so, go to the accumulator and on the low side port (faces the engine) stick a lil screwdriver in it for a second. Dpo you ge ta nice hiss or is it dead? If dead, you lost all of your freon for some reason namely a leak. If you have pressure, go to the other side of the accumulator and unplug the connector. jumper the connector together with a paper clip (it's a switch so don't worry) and try the A/C. Does it work? If so, either run without the switch or replace it

if that switch is bad, or there is no refrigerant in your system, it will be open and you won't get votage to the compressor
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Old 07-01-2017, 08:05 PM   #4
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Re: A/C Relay Location?

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Originally Posted by torque_is_good View Post
please clarify

if you engage the A/C the compressor does not engage, is that correct? Do the cooling fans turn on? If so, go to the accumulator and on the low side port (faces the engine) stick a lil screwdriver in it for a second. Dpo you ge ta nice hiss or is it dead? If dead, you lost all of your freon for some reason namely a leak. If you have pressure, go to the other side of the accumulator and unplug the connector. jumper the connector together with a paper clip (it's a switch so don't worry) and try the A/C. Does it work? If so, either run without the switch or replace it

if that switch is bad, or there is no refrigerant in your system, it will be open and you won't get votage to the compressor
if there is no refrigerant ,does the compressor clutch have to be on when adding new refrigerant??, if so how do I make the clutch engage?
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Old 07-05-2017, 01:04 PM   #5
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Large & Recharged

If you have installed a new compressor you need to install the correct type and partial quantity of oil directly into the compressor, and the balance of the oil into the rest of the system, then rotate by hand or with a strap wrench.

The type of oil you need is based on the type of refrigerant you chose.

Then after the system is closed, half charge it, (there should now be enuff charge in the system to de-activate the LO-Pressure cutoff switch) then start the engine, start the compressor, then complete charging the system.

If the clutch does not engage after a half charge you can apply 12 volts thru a fused jumper wire to the clutch solenoid.

You can test the jumper with the engine off so you won’t be near moving parts and you should hear the ••CLICK••.


Happy Racing !



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Old 07-05-2017, 01:10 PM   #6
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Re: Large & Recharged

Quote:
Originally Posted by NINÅ View Post
If you have installed a new compressor you need to install the correct type and partial quantity of oil directly into the compressor, and the balance of the oil into the rest of the system, then rotate by hand or with a strap wrench.

The type of oil you need is based on the type of refrigerant you chose.

Then after the system is closed, half charge it, (there should now be enuff charge in the system to de-activate the LO-Pressure cutoff switch) then start the engine, start the compressor, then complete charging the system.

If the clutch does not engage after a half charge you can apply 12 volts thru a fused jumper wire to the clutch solenoid.

You can test the jumper with the engine off so you won’t be near moving parts and you should hear the ••CLICK••.



Happy Racing !



He Must Have Been Cheating - Because I Was And He Almost Beat Me.
ok thanks
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